When Brinelin, the Moon Kraken enters the battlefield or whenever you cast a spell with mana value 6 or greater, you may return target nonland permanent to its owner's hand. Partner (You can have two commanders if both have partner.)

Flash Flying When Draining Whelk enters the battlefield, counter target spell. Put X +1/+1 counters on Draining Whelk, where X is that spell's mana value.

When Fierce Empath enters the battlefield, you may search your library for a creature card with mana value 6 or greater, reveal it, put it into your hand, then shuffle.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.) Spells you cast with mana value 6 or greater have cascade.

Creature spells you cast with mana value 6 or greater cost {2} less to cast.

Whenever Radagast the Brown or another nontoken creature enters the battlefield under your control, look at the top X cards of your library, where X is that creature's mana value. You may reveal a creature card that doesn't share a creature type with a creature you control from among those cards and put it into your hand. Put the rest on the bottom of your library in a random order.

Ward {1} Beasts and Birds you control have ward {1}. Whenever you cast a spell with mana value 5 or greater, choose one — • Create a 3/3 green Beast creature token. • Create a 2/2 blue Bird creature token with flying.

Flash Flying Spells you cast with mana value 5 or greater cost {1} less to cast and can't be countered.

Whenever you cast a spell with mana value 5 or greater, draw a card.

Counter target spell. Create X 1/1 colorless Thopter artifact creature tokens with flying, where X is that spell's mana value.

For each opponent, you create a token that's a copy of up to one target creature that player controls.

Exile target spell, then roll a d20 and add that spell's mana value. 1—14 | You may cast the exiled card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell. 15+ | You may cast the exiled card without paying its mana cost for as long as it remains exiled.

The next spell you cast this turn can be cast as though it had flash. When you cast your next spell this turn, put X +1/+1 counters on up to one target creature, where X is the mana value of that spell.

Roll two d8 and choose one result. Draw cards equal to that result. Then you may cast an instant or sorcery spell with mana value less than or equal to the other result from your hand without paying its mana cost.

Gain control of target creature with mana value X or less. If X is 5 or more, create a token that's a copy of that creature.

Reveal the top X cards of your library. You may put any number of permanent cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield into your graveyard.

Draw cards equal to the greatest power among creatures you control. You may cast a spell with mana value 5 or less from your hand without paying its mana cost.

Return target creature with mana value X to its owner's hand. You create X 1/1 blue Faerie creature tokens with flying.

Look at the top five cards of your library. You may put up to two permanent cards with mana value 5 or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order. Flashback {7}{G}{G}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Gain control of each noncommander creature with mana value 3 or less.